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The Buchla 100 series' dual oscillator (1960s), drawn in its San Francisco Tape Music Center panel: "two independent oscillators in one unit" whose frequencies run from 5 cps to 20 kc, "controlled internally or with externally applied control voltages", their waveshape "continuously adjustable from sine to sawtooth", and wideband frequency modulation (the 100 series catalogue). Each oscillator has two outputs.

Key features

• Two oscillators, 5 cps to 20 kc
• Wave shape from sine to sawtooth
• Frequency modulation input and depth
• Frequency set by its knob or by an external control voltage (ext / int)